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Constellium Ownership | Who Owns Constellium?

OverviewForecastRevenueFinancialsChartTranscripts

Constellium Ownership Summary

Constellium is owned by 51.72% institutional investors, 2.17% insiders, and 46.11% retail investors. Blackrock funding, inc. /de is the largest institutional shareholder, holding 9.75% of CSTM shares. Janus Henderson Contrarian D is the top mutual fund, with 2.91% of its assets in Constellium shares.

CSTM Ownership Benchmark

TypeName% Inst% Insiders% Retail
StockConstellium51.72%2.17%46.11%
SectorBasic Materials Stocks 32.98%12.17%54.85%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

HolderShares% HoldingValue
Blackrock funding, inc. /de13.73M9.75%$258.82M
Fmr13.52M9.60%$201.15M
Bpifrance sa12.59M8.94%$237.40M
Blackrock11.43M7.79%$215.44M
Janus henderson group6.45M4.43%$66.19M
Nut tree capital management, lp5.21M3.70%$77.58M
T. rowe price investment management5.12M3.63%$76.14M
Encompass capital advisors4.26M3.03%$63.45M
Vanguard group4.05M2.88%$76.44M
Morgan stanley3.73M2.65%$70.28M

Top Institutional Shareholders by % of Total Assets

HolderShares% AssetsValue
Kailix advisors978.06K20.55%$18.44M
Nut tree capital management, lp5.21M17.90%$77.58M
Soapstone management1.67M16.86%$24.84M
Bpifrance sa12.59M10.03%$237.40M
Brightline capital management1.63M9.91%$24.18M
Beaconlight capital1.27M9.35%$18.95M
Mountaineer partners management681.46K7.19%$12.85M
Encompass capital advisors4.26M2.23%$63.45M
Beacon investment advisors340.62K2.07%$5.07M
Rockingstone advisors219.23K1.88%$4.13M

Top Buyers

HolderShares% AssetsChange
Blackrock11.43M0.00%1.66M
D. e. shaw2.43M0.02%1.28M
Morgan stanley3.73M0.00%1.22M
Vanguard group4.05M0.00%755.92K
Brightline capital management1.63M9.91%625.00K

Top Sellers

HolderShares% AssetsChange
T. rowe price investment management5.12M0.05%-9.19M
Westwood group---6.52M
Macquarie group---2.03M
Oberweis asset management inc/---1.84M
Samlyn capital---1.73M

New Positions

HolderShares% AssetsChangeValue
Bw gestao de investimentos ltda.546.27K0.23%546.27K$10.30M
Danske bank437.10K0.02%437.10K$8.24M
Norges bank424.04K0.00%424.04K$4.35M
Penn capital management company365.19K0.55%365.19K$6.90M
Nomura131.01K0.00%131.01K$2.47M

Sold Out

HolderChange
Capital performance advisors llp-7.00
First horizon advisors-20.00
Southstate-20.00
Svb wealth-26.00
Corecap advisors-28.00

Institutional Ownership Trends

DateHoldingsChange %SharesChange %OwnershipChange %Increased PositionChange %Decreased PositionChange %
Dec 31, 2025193-22.18%72,832,493-42.75%510.63%94-32.37%66-4.35%
Sep 30, 20252386.25%127,175,9661.31%901.14%1350.75%699.52%
Jun 30, 2025229-2.14%130,590,8950.80%921.17%1366.25%66-1.49%
Mar 31, 20252341.30%130,456,040-3.44%891.04%1282.40%67-9.46%
Dec 31, 2024228-1.30%134,826,7390.18%921.08%122-4.69%742.78%

Top Mutual Funds Shareholders

HolderShares% HoldingChange
Janus Henderson Contrarian D4.18M2.91%-
Janus Henderson US Opportunistic Alpha4.18M2.86%321.95K
Janus Henderson Opportunistic Alpha MA3.86M2.64%3.86M
iShares Russell 2000 ETF3.31M2.45%626.27K
T. Rowe Price U.S. SC Value Eq Tr-Z3.42M2.40%187.37K
Fidelity Value3.17M2.35%-173.10K
T. Rowe Price Small-Cap Value2.37M1.75%-101.72K
Jennison SMid Cap Core Equity2.31M1.58%-41.76K
PGIM Jennison Small Company A2.31M1.58%-
Janus Henderson US Small Cap Growth2.18M1.56%-

Recent Insider Transactions

DateNameRoleActivityValue
Mar 10, 2026Corre Stephane President, AS&ISell$38.84K
Mar 09, 2026Corre Stephane President, AS&IBuy-
Mar 10, 2026Hoffmann Philippe President, A&TSell$122.31K
Mar 09, 2026Hoffmann Philippe President, A&TBuy-
Mar 09, 2026Becker Marcus SVP CPOBuy-

Insider Transactions Trends

DateBuySell
2026 Q1314

CSTM Ownership FAQ

Who owns the most shares of Constellium?

Constellium’s largest shareholders are Blackrock funding, inc. /de (13.73M shares, 9.75%), Fmr (13.52M shares, 9.60%), and Bpifrance sa (12.59M shares, 8.94%). Together, they hold 28.29% of Constellium’s total shares outstanding.

Does Blackrock own Constellium?

Yes, BlackRock owns 7.79% of Constellium, totaling 11.43M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 215.44M$. In the last quarter, BlackRock increased its holdings by 1.66M shares, a 17.00% change.

Who is Constellium’s biggest shareholder by percentage of total assets invested?

Kailix advisors is Constellium’s biggest shareholder by percentage of total assets invested, with 20.55% of its assets in 978.06K Constellium shares, valued at 18.44M$.

Who is the top mutual fund holder of Constellium shares?

Janus Henderson Contrarian D is the top mutual fund holder of Constellium shares, with 2.91% of its total shares outstanding invested in 4.18M Constellium shares.

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